Probability ncert solutions Chapter 15 Exercise 15.1 Question 1
1. Complete the following statements.
(i) Probability of an event E + Probability of the event 'not E'= 1
(ii) The probability of event that cannot happen is zero. Such an event is called impossible event.
(iii) The probability of an event that is certain to happen is 1. Such an event is called sure event or certain event.
(iv) The sum of the probabilities of all the elementary events of an experiment is 1.
(v) The probability of an event is greater than or equal to zero and less than or equal to 1.